Transon Poster Tube Storage for Artworks, Blueprints, Drafting and Scrolls Color Green PLASTIC POSTER TUBE - The poster scroll tubes are suitable for posters, paper rolls, scrolls, artworks, documents, maps,sketching papers, architect papers, blue prints, anything that you want to roll in instead of folding. EXTENDABLE LENGTH - Telescoping tube . Simply twisting the tube will adjust the length from 20.4to 40. WATER-PROOF PLASTIC - Plastic of the poster tube protects your artworks, paper scrolls, documents, blue prints from water. VERSATILE FUNCTION - Great storage and transporting tube, perfect for storing: artworks, blue prints, documents, maps, paper scrolls, posters etc. Suitable for art students, architects, designers, artist, Overall size: 3.4(diameter) x 25.4(length) - 40(extended) Quality nylon belt Adjustable Easy to carry Rotate to the right to extend to desired length Rotate to the left to lock in